title: Co-liquefaction of micro- and macroalgae in subcritical water.
abstract: Co-liquefaction of microalgae (Spirulina platensis, SP) and macroalgae (Entermorpha prolifera, EP) was studied in subcritical water by using a stainless-steel batch reactor at different temperature (250 to 370°C), time (5 to 120 min), SP/EP mass ratio (0 to 100%), and water/algae mass ratio (1:1 to 6:1). The results suggested that a positive synergetic effect existed during the co-liquefaction of SP and EP, and this synergetic effect was dependent on reaction conditions. Co-liquefaction alleviated the severe reaction conditions compared to the separate liquefaction of SP and EP and also promoted the in situ deoxygenation of the bio-oil. The higher-heating-value of bio-oil produced from the co-liquefaction of SP and EP (wSP:wEP=1) is 35.3 MJ/kg. The energy recovery from the co-liquefaction is larger than the average value from the separate liquefaction of SP and EP. Co-liquefaction did not affect the molecular composition but affect the relative amount of each component in the bio-oil.
authors.affiliation: College of Physics and Chemistry, Department of Applied Chemistry, Henan Polytechnic University, No. 2001, Century Avenue, Jiaozuo, Henan 454003, PR China.
authors.forename: Binbin
authors.initials: B
authors.lastname: Jin
authors.forename: Peigao
authors.initials: P
authors.lastname: Duan
authors.forename: Yuping
authors.initials: Y
authors.lastname: Xu
authors.forename: Feng
authors.initials: F
authors.lastname: Wang
authors.forename: Yunchang
authors.initials: Y
authors.lastname: Fan
mesh_terms: D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002152:Calorimetry, Differential Scanning; D008401:Gas Chromatography-Mass Spectrometry; D009821:Oils / Q000737:chemistry; D012624:Seaweed / Q000187:drug effects* / Q000378:metabolism*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013818:Thermogravimetry; D013997:Time Factors; D014867:Water / Q000494:pharmacology*
chemical_list: D009821:Oils; D014867:Water
keywords: Bio-oil; Co-liquefaction; Entermorpha prolifera; Spirulina platensis; Subcritical water